If this is your weekend with your kids, why not catch a few of the best offerings for the under-ages set from the International Film Fest? The following movies screen at the Oak Street Cinema as part of the Childish Film Festival. All ages: Flights of Fancy, a collection of 7 animated shorts from the US and Sweden, Saturday at 11. For ages 7 and up: Spoon, a Dutch movie about a boy who hides out in a department store after his parents disappear in a hot air balloon, Saturday at 2:30. For teenagers: Boy Called Twist, a South African re-telling of Dickens classic Oliver Twist, Sunday at 11.